The single-track trolley can be driven by lifting heavy objects by hand, walking on the lower wing edge of i-steel track, and hanging the hoist or other lifting machinery under the trolley, which can be composed of manual lifting transport trolley, which is installed on the straight or curved monorail overhead transport line or manual single beam, bridge type,Cantilever craneIt is widely used to install machines and carry goods in factories, mines, docks, docks, warehouses and machine rooms, especially for equipment maintenance work without power.